Be aware that even if you install HD and Ultra textures of Solar System objects, they can't reach the details of procedural planets.See the FAQ and first post in Troubleshooting and bug reports - 0980 thread.

I was hoping to see bridges and skyscrapers and all that sort of stuff lol.

Its possible to get pretty close to that look up kluds grand canyon mod.. I just don't know how to do it yet.

what if I want to see Mt Everest or fly through the Himalayas or the Andes or something?

I am working on some maps currently and learning a few things.. Hopefully there can be an Earth texture update before too long and bump. But for the stuff you are talking about I will soon do request for local areas for people that you can make out stuff like that. It just will not be planet wide. Check out Klud's Grand Canyon mod.

Will this include fictional locations or just exclusively real life locations?

BOTH. I am just using what is most familiar for me so far. Not to mention I can work with a number a various types of data sets that are already available with Earth. A lot of trial and error.

The RMA, the International Space Station will be in the next version of Space Engine.

"Space is big. Really big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist, but that's just peanuts to space." - Douglas Adams